Unicharm Cat Diapers, Manner Wear For those wondering whether to choose S size or SS size! You might be tempted to buy a size too big, but it will leak if it's too big. (← Been there, done that) If it's too small, it will restrict your cat's movement and put a burden on them. (← Been there, done that) Buying a large quantity of the wrong size at the regular price will be a waste... (← Been there, done that) So, here's a size trial pack (=^・^=) S size: 2 pieces SS size: 2 pieces Total: 4 pieces set. Anonymous shipping is planned. Please refrain from price reduction comments m(_ _)m